47 lines
1.8 KiB
Java
47 lines
1.8 KiB
Java
// run with:
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// java -cp $ORACLE_HOME/jdbc/lib/ojdbc8.jar:. BatchInsert
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// requires:
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// CREATE TABLE t(a NUMBER, b VARCHAR2(150));
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// results in these metrics (Starts=10) for a single *batch* execution of the SQL (v$sql.executions=1)
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//
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// INSERT INTO t SELECT :1 , :2 FROM dual
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//
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// --------------------------------------------------------------------------------------------------------
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// | Id | Operation | Name | Starts | E-Rows | Cost (%CPU)| A-Rows | A-Time | Buffers |
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// --------------------------------------------------------------------------------------------------------
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// | 0 | INSERT STATEMENT | | 10 | | 2 (100)| 0 |00:00:00.01 | 13 |
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// | 1 | LOAD TABLE CONVENTIONAL | T | 10 | | | 0 |00:00:00.01 | 13 |
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// | 2 | FAST DUAL | | 10 | 1 | 2 (0)| 10 |00:00:00.01 | 0 |
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// --------------------------------------------------------------------------------------------------------
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import java.sql.*;
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import oracle.jdbc.OracleConnection;
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public class BatchInsert {
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public static void main(String[] args) throws InterruptedException {
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try {
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DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
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Connection conn = DriverManager.getConnection( "jdbc:oracle:thin:@linux01:1521:LIN19C", "system","oracle");
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String sql = "INSERT INTO t SELECT ?, ? FROM dual";
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PreparedStatement stmt = conn.prepareStatement(sql);
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for(int i=1; i<=10; i++) {
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stmt.setInt(1, i);
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stmt.setString(2, new String("blah"));
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stmt.addBatch();
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}
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stmt.executeBatch();
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} catch (SQLException ex) {
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ex.printStackTrace();
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}
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}
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}
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